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Home >> Suzuki >> 2009 >> XL7 Luxury, FWD >> Repair and Diagnosis >> Transmission >> Automatic Transmission >> Diagnostic Information and Procedures >> DTC P0634: Transmission Control Module (TCM) Overtemperature >> Circuit/System Description
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Circuit/System Description

The control solenoid (w/body and TCM) valve assembly has a built-in TCM temperature sensor to detect possible overtemperature conditions of the TCM. This fault indicates the TCM is in an overtemperature condition and the TCM has shut down to protect from possible heat damage to the TCM. The TCM will remain off until the over temperature condition no longer exists.